Ena-chan is only interested in erotic things, and is treated like a toy by her brother who doesn't work and plays with his dick all day and night. "I don't dislike erotic things, but I don't get turned on by my brother's penis?" is what most people would think, but once Ena-chan gets turned on, she turns into a slutty little sister who is just as horny as her brother, a sex monster!! She straddles her brother's raw penis and squeezes it with her tight pussy, making him cum inside her!!!